{ "languages": null, "filetype": "pdf", "toc": [], "pages": 22, "ocr_stats": { "ocr_pages": 0, "ocr_failed": 0, "ocr_success": 0, "ocr_engine": "none" }, "block_stats": { "header_footer": 22, "code": 0, "table": 2, "equations": { "successful_ocr": 27, "unsuccessful_ocr": 5, "equations": 32 } }, "postprocess_stats": { "edit": {} } }